He has posted them as a comment down below. Just lettingyou know before you read the rest of the post.
I was wondering if anyone has the same idea of playing old versions of barotrauma. Originally the game was called "Subsurface" back in its pre-alpha phase. From what i know SCP Containment Breach has an old versions forum made by regalis but why not barotrauma aswell? If you take a look at Regalis's old barotrauma videos you will see lots of differences visualy and gameplay wise. The oldest version of the game i have is version 0.3.5.1. If you have an old version around this one feel free to post a link to it.
Here is a link to the original barotrauma video from regalis: https://www.youtube.com/watch?v=SrdWn-vNd84
i hope someone can find a way to upload or post some of the old legacy builds like 0.1.1.
im glad to see that your a guy who actually likes saving his older builds of his game. im so happy right now. you could make an official post of these versions so more people can know about the game's history but anyways thanks.